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2 Sheets-Sheet 1.

(No Model.)

J R. MOORE. STEAM GENERATOR.

No. 337,073. 2 Patented Mar. 2, 1886.

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(No Model.)

J. R. MOORE.

STEAM GENERATOR. i

No. 337,073. Patented Mar. 2, 1886.

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rm: NORRIS PETER UNITED STATES PAT ENT. OFFICE. 1

JOHN ll. l( OI E, OF BROOKLYN, NE\V YORK, ASSIGNOR OF ONE-HALF TO JOSEPHB. SEE, OF SAME PLACE.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 1337,0753, dated March2, 1886. Application filed September 17, 1885. Serial No. 177,324. (Nomodel.)

.7 all whom, it may concern: it known that I, JOHN R. MOORE, 0 Brooklyn,in the county of Kings and State of New York, have invented a new anduseful Improvement in Steam Generators, of

which the following is a specification.

My invention relates to that class of steamgenerator in whichv theheatingsurface is composed of coils arranged within a furnace.

Important objects of the invention are to provide a generator in whichsteam will be made very rapidly, in which the-coils and connecting partswill be supported in a very stable manner and preferably independent ofthe furnace-structure, and to secure a. thorough separation of the steamand water which pass from the coils, so that drysteam will be produced.

1n the accompanying drawings, Figure 1 is a vertical section of agenerator embodying myinvention. Fig. 2 is a side view of the workingparts of the generator, the casing'and furnace being omitted; and Fig. 3is a transverse section of a drum with which the upper ends of theheat-ing-coils'are connected and a portion of the frame which supportsthis drum.

Similar letters of reference designate corresponding parts in theseveral figures.

A designates the furnace, which, as reprev sented, consists of acylindric metallic shell or casing, B, and a lining, B, of fire-bricl orother suitable material.

C designates the grate, which may be of any suitable construction.

The heating-surface of the generator is formed by a series of coilswhich are arranged vertically in the furnace, and of which any suitablenumber may be employed. I have here represented four coils, D D DDflwhich are arranged one within another, and which are of barrel-likeform, or have their convolutions gradually increasing in diameter fromthe middle upward and downward toward opposite ends. This gives thecoils approximately the form of two cones united at their bascs,xthelower one being inverted. 'lhese coils are to be made of pipes or tubes.I have also represented a feed-coil, D, which is of cylindric form andsurrounds thedieatingcoils, it being arranged near the interior wall ofthe furnace.

E designates a drum arranged horizontally above the furnace-coils, andwhich may be of cast or wrought metal. As here represented, this drum issupported upon upright frames F, the form of which is best shown inFigs. 2 and 3. These frames may be of wroughtiron, and consist of twodiverging legs united at the upper ends to form a semicircular cradle,F, wherein the drum E rests, and having their ends secured by boltsatothe foundation of the boiler. The two legs of the frame F may beconnected at their lower ends by a bolt, F, as shown'in Fig. 2, so as toprevent them from spreading.

The several coils DDD D are connected at their upper ends by branches (2(1 d d with the under side of the drum E, each branch being connectedbya coupling, d*,with a nipple fixed .in the drum. These branches (1 d,&c., serve to support the coils on their one side, and the coils areadditionally supported by suspenders or hangers, e,which are hung fromthe drum E, and which receive the upper convolutions of each coil at apoint opposite its branch d d, &c. In this waythe coils are suspended ordepend .from the drum and have'their weight supported by the drum andthe frames F.

Above the drum E, I have represented a steam drum, G, which is connectedby branches G with the drum E, and in these branches G are verticalplates or partitions g, which have the effect of separating or dividingthe water from the steam which passes upward through the branches intothe steamdrurn G.

I have shown in the drum E ahorizontallyarranged partition orbaffle-plate, e, which may be supported on lugs or ears 0", projectingfrom the inner sides of the drum. which passes upward through thebranches d d, 860., when the generator is in operation, impinges againstthe under side of the baffleplate 6, and in this drum E the water isseparated from the steam.

From opposite ends of the drum returupipes H lead downward, and areconnected at their lower ends with manifolds H, from which branches f fff lead to and connect 0 The steam roo with thelower ends of the severalcoils D D, 82c. These manifolds H are connected at their lower ends by apipe, H", and this pipe is in turn connected by-a pipe, H with the 5lower end of the feeding-coil D, the pipes H Hbeing arranged outside thefurnace. From. the pipe 1-1" leads a blow-off, H, in which is a blow-offvalve, 71, and in each of'the downwardly-extending returnpipes isarranged a r check-valve, h, which may beoftheordinary form, and whichis placed so that it opensdownward or in a direction away from the drumE. These valves h permit the passage of water downward through the pipeH and 1 manifolds H, and prevent the passage of wa ter upward throughthe pipes H.

With the upper end of the is connected a feedpipe, d, the feed-pump orinjector.

The generator is inclosed by a cap or top, B,'secured to the outercasing, B, and from it leads theoutlet-pipe B to a smoke-stack orchimney. The inner heating-coil, D,'fmay have stopfeeding-coil whichleads from '25 pers d closing itsin'terior at the top and bottom, sothat the heated products fromthefurmice A will be prevented from passingdirectly upward through the 'innercoll, D, and will be compelled tocirculate or travel circuitouhly upward between the con'volutions of thesev- I eral coils, and will therefore, be most effective in heatingthem. 7 As before, stated, the arrangement of the check-valves hprecludes an upward cii'cula- ,35 tion through the pipes H, and when thegenerator is in operation the circulation takes I place upward throughall-the heatingcoils, and thence to the drum E,"which constitutes aseparator to divide the water fromthe steam, 4o andthe steam passesupward into the steamdrum G, while the water'ret'urns downward throughthe pipes H and manifolds H, a'nd'is supplied by the branc hesff, 850.,to the lower ends of the several heating-coils. yThe pipe H", whichconnects the manifolds H at their lower end, tends to equalize thecirculation through each of the return-pipes Hand manifolds and throughthe'coils which are supplied through the branches from the $0-manifolds.

From the above description. it will be seen that in this improvedgenerator the heatingsurface isveryeflbctive. The working parts aresupported independent of the casing or furnace, and are therefore notliable to be strained by unequal expansion, and effective provision isafforded for separation of the water from the steam, in order to producedry steam' and for maintaining the circulation 6o vthrough theheating-coils constantly in one direction. E

It will be seen that by means of the pipes H H and the branches ff f fthe return pipes H and the lower ends'ofthe feeding and.

heating coils are all connected together.

By making the lower portions of the heat ing-coils of inverted conicalform the several convolutions of each coil are brought outof li'nevertically and are more exposed to the heat of the fire than would bethe case if the coils were cylindric from end to end, even though suchcylind'ric'coils-were terminated at the lower ends at different levels.

What I claim as my invention, and desire to secure by Letters Patent;is-

l. The'combination, with a furnace and 'heatingcoils arranged verticallythereon, of a horizontally-arranged drum, with which the upper ends ofthe coils are connected and from which the coils depend, whereby thedrum is made to support the weight of the coils, up-

right frames independent of the bqick setting of the generatorsupporting the drum, and re turn-pipes for conducting water from thedrum to the lower ends of the coils, substantially as herein described.

2. The combination, with the upright frames F, the drum E, supported bythem, and the coils D D, &c., having their upperiends connected bybranches d d, &c., of the drum,

and suspenders e, hung from the drum for supporting the-coils oppositesaid branches, substantially as herein described.

3; The combination, witha furnace and a horizontally-arranged drum abovethe same,

of coils arranged within the furnace andhav ing their so that thecoilsdepend therefrom, the lower". portions of the coils having an invertedconical form, and returnpipes for conducting water fromthe' drum to thelower ends of the coils, substantially'as herein described.

4. The "combination, withthe' drum E, the coils D D, decreasing indiametertoward each end and having their upper ends connected with thedrum so that the coils depend therefrom, and

return-pipes for conducting water from the drum to the lower ends of thecoils, substantially as herein-described.

5. The combination, with a furnace and ver-' tically-arranged'heating-coils, of a horizon;

tally-arranged drum, with which the upper ends of the coils areconnected and which constitutes a separator for the steam and water, anda steam drum connected with the separator and receiving steam therefrom,substantially as herein described.

6. The combinatiom'with a furnace and ver tically-arranged heating-coilstherein, ofthe upper endsconnected with the dru m &c.,having theirconvolutions separator-drum. E? with which the upper ends" of the'coilsare connected and which contains the baffle-plate e, and a steam-drumconnected with the separator-drum and receiving steam from it,substantially as herein described.

7. The combination, with a furnace and ver- ,tically-arrangedheating-coils; therein, of the separator-drum E, with its baffleplate,-and. with which the uppercnds of the coils are. connected, thesteam-drum Gand branches G ,i

having verticafpartiti-ons g, for dividing steam and water andconnecting the-two drums, sub-1y '1 stantially as herein described.

8. The combination, with a furnace and we:

stantially as herein described.

drum with which the upper ends of the coils tically-arranged heatingcoils therein, of

9. The combination, with a furnace and vertically -arranged heatingcoilstherein, of a are connected, return-pipesextending down ward from thedrum and terminating in manifolds, with which the lower ends of thecoils are connected, an equalizing pipe connecting the manifoldstogether, a feedpipe for supplying water to the manifolds, and ablow-0ft pipe con nected with the manifolds, substantially as hereindescribed. 10. Thecon1bination',withafurnaceand vertically-arrangedheatingcoils therein, of a drum with which the upper ends of the coilsare connected, at feeding-coil arranged within the furnace outside theheating-coils, return pipes leading downward from the drum, andv pipesconnecting the return-pipesalnd the lower end of the feeding-coil with 7the lower ends of the heating-coils, substantially as herein described.

Witnesses: HENRY MCBRIDE,

FREDK. HAYNES.

JOHN R.- MOORE."

